Low alloy steels Part 2

Low alloy tempering steels

23 CrNiMo 747 1.6749 23 CrNiMo 7 4 7 ASTM A471 K32800 min. 0.20 0.50 1.70 0.90 0.60max. 0.25 0.30 0.80 0.010 0.015 2.00 1.20 0.80 0.05 0.025 Cu max. 0.20

DIN 17201 / SEW 550 / EN 10083-1 / Machine and equipment construction30 CrNiMo 8 1.6580HH 30 CrNiMo 8 HH 30 CrNiMo 8 823M30 30CND8 SNC M1 min. 0.30 0.15 0.50 1.80 1.80 0.30

max. 0.34 0.40 0.80 0.015 0.007 2.20 2.20 0.50 Sn max. 0.025 Cu max. 0.20

DIN 17211 / Nitride steel / crankshafts, valve spindles31 CrMoV 9 1.8519 31 CrMoV 9 min. 0.28 0.15 0.40 2.30 0.15 0.10

max. 0.34 0.40 0.70 0.009 0.007 2.70 0.25 0.20 Sn max. 0.010 Cu max. 0.20

DIN 17211 / Nitride steel / piston rods, spindles34 CrAlNi 7 1.8550 34 CrAlNi 7 ASTM A355 K52440 min. 0.30 0.15 0.40 1.50 0.90 0.15 0.80

max. 0.37 0.35 0.60 0.025 0.025 1.80 1.10 0.25 1.10

DIN 17350 / Tool steel / tools for hot work / forging dies56 NiCrMoV 7 1.2714 56 NiCrMoV 7 35CrMo8 min. 0.50 0.10 0.65 1.00 1.50 0.45 0.07 0.008

max. 0.60 0.40 0.95 0.030 0.030 1.20 1.80 0.55 0.12 0.020 Cu+10Sn max. 0.50

Tool steel / dies for briquetting and compacting equipment40 NiCrMo 6 1.6565 40 NiCrMo 6 818M40 AISI 4340 SNC M8 min. 0.36 0.15 0.50 1.00 1.40 0.20

max. 0.44 0.35 0.70 0.025 0.025 1.40 1.70 0.30

DIN 17243 / EN 10028 / High temperature steel / application temperature up to max. 500°c. / power station construction / flanges15 Mo 3 1.5415 15 Mo 3 16Mo3 243B K11820 15D3 STBA 12 min. 0.12 0.15 0.50 0.25

max. 0.20 0.35 0.70 0.035 0.030 0.25 0.30 0.35 0.050

DIN 17245 / EN 10213-2 / High temperature steel / application temperature up to max. 500°c. / power station construction / flanges22 Mo 4 1.5419 22 Mo 4 G20Mo5 245 SAE 4422 SCPH 11 min. 0.18 0.20 0.40 0.30

max. 0.25 0.40 0.70 0.015 0.018 0.30 0.50

SEW 555 / Turbine construction and generator devices20 CrMoNiV 47 1.6979 20 CrMoNiV 4 7 min. 0.17 0.30 1.20 0.50 0.80 0.25

max. 0.25 0.30 0.50 0.015 0.018 1.40 0.60 1.00 0.35 0.020

DIN 17243 / EN 10028-2 / High temperature steel / application temperature up to max. 530°c. / power station construction13 CrMo 4 4 1.7335 13 CrMo 4 4 13CrMo4-5 620 K11562 15CD4-05 STBA 20 min. 0.10 0.10 0.40 0.80 0.45

max. 0.18 0.35 0.70 0.025 0.015 1.10 0.30 0.60 0.030

DIN 17243 / EN 10028 / SEW 595 / High temperature steel / application temperature up to max. 500°c. / power station construction10 CrMo 9 10 1.7380 10 CrMo 9 10 10CrMo9-10 622 K21390 12CD9-10 STBA 24 min. 0.10 0.15 0.40 2.00 0.90 0.010

max. 0.14 0.30 0.60 0.015 0.010 2.50 1.10 0.040 Cu max. 0.25 N max. 0.012

DIN 17230 / Roller bearing steel / WD to 50 mm3520 1.3520 100 CrMn 6 100CrMn6 K19195 100CM6 min. 0.90 0.55 1.05 1.45 0.005 Ti max. 0.003 Cu max. 0.25

max. 1.00 0.70 1.20 0.025 0.008 1.65 0.30 0.080 0.050 O max. 0.0015

DIN 17230 / Roller bearing steel / WD > 50 mm3539 1.3539 100 CrMnMo 8 100CrMnMo8 min. 0.90 0.40 0.80 1.80 0.50 0.015 Ti max. 0.003 Cu max. 0.25

max. 1.00 0.60 1.10 0.025 0.008 2.05 0.30 0.60 0.050 O max. 0.0015

DIN 17230 / Roller bearing steel / WD > 50 mm3536 1.3536 100 CrMo 7 3 100CrMnMo7 ASTM A485 100CrMo7-3 min. 0.90 0.20 0.60 1.65 0.20 0.015 Ti max. 0.003 Cu max. 0.25

max. 1.00 0.40 0.80 0.025 0.008 1.95 0.30 0.35 0.050 O max. 0.0015

DIN 17230 / Roller bearing steel / WD up to 30 mm100 Cr 6 1.3505 100 Cr 6 100Cr6 2S.135 SAE 52100 100C6 SUJ 2 min. 0.98 0.20 0.25 1.40

max. 1.05 0.30 0.45 0.025 0.025 1.60 0.30 Cu max. 0.30

DIN 17230 / Roller bearing steel / WD up to 30 mm100 Cr 6 M1 1.3505 100 Cr 6 Modified Analysis min. 0.90 0.20 0.30 1.45 0.010 Cu As max. 0.04 Sn max. 0.03 Ti max. 0.003

max. 1.00 0.35 0.45 0.025 0.008 1.65 0.25 0.080 0.050 0.25 O max. 0.0015 Sb max. 0.005 Pb max. 0.002

Alloy construction steel / rail vehicle construction / wheel tyres65 Cr 3 1.7017 65 Cr 3 min. 0.63 0.25 0.55 0.30

max. 0.68 0.40 0.70 0.035 0.035 0.50 N max. 0.0070

ASTM A29 / General machine constructionAISI 4130 (1.7218) 25 CrMo 4 25CrMo4 AISI 4130 25CD4 SCCr M1 min. 0.28 0.20 0.40 0.80 0.20 0.15

max. 0.33 0.30 0.60 0.015 0.015 1.10 0.25 0.25 0.05 Cu max. 0.35

ASTM A29 / General machine constructionAISI 4130 M1 Modified Analysis AISI 4130 min. 0.28 0.20 0.40 0.80 0.15

max. 0.33 0.30 0.60 0.010 0.010 1.10 0.25 0.25 Cu max. 0.35

ASTM A29 / Ni-alloy / General machine constructionAISI 4130 M2 Modified Analysis AISI 4130 min. 0.29 0.20 0.50 0.95 0.60 0.20 0.020 As max. 0.025 Sn max. 0.025 N max. 0.010 B max. 0.0005

max. 0.32 0.30 0.60 0.012 0.010 1.10 0.70 0.25 0.05 0.040 0.01 Sb max. 0.002 Pb max. 0.0015 Cu max. 0.20

ASTM A29 / General machine constructionAISI 4135 (1.7220) 34 CrMo 4 34CrMo4 708A30 AISI 4135 34CD4 SCCr M3 min. 0.33 0.15 0.70 0.90 0.15

max. 0.37 0.30 0.90 0.020 0.015 1.10 0.25 0.25 Cu max. 0.35

ASTM A 29 / General machine constructionAISI 4140 (1.7225) 42 CrMo 4 42CrMo4 708M40 AISI 4140 42CD4 SCCr M4 min. 0.39 0.15 0.75 0.90 0.15

max. 0.43 0.30 0.90 0.020 0.015 1.10 0.25 0.25 0.30 Cu max. 0.35

ASTM A 29 / General machine constructionAISI 4140 M1 Modified Analysis AISI 4140 min. 0.39 0.20 0.80 0.90 0.15

max. 0.43 0.30 1.10 0.025 0.025 1.10 0.25 0.03

ASTM A182 Tool steelAISI 4340 (1.6565) 40 NiCrMo 6 818M40 AISI 4340 G43400 SNC M8 min. 0.38 0.15 0.60 0.70 1.65 0.20 0.020 As max. 0.025 Sn max. 0.025 N max. 0.010 B max. 0.0005

max. 0.43 0.30 0.80 0.025 0.010 0.90 2.00 0.30 0.05 0.040 0.01 Sb max. 0.002 Pb max. 0.0015 Cu max. 0.20

ASTM A 182 / Parts for valves / pipe flangesA 182 F12 (1.7335) 13 CrMo 44 13CrMo4-5 620 - 440 ASTM A182F12 K11564 15CD4.05 STBa 20 min. 0.10 0.10 0.30 0.80 0.44

max. 0.15 0.60 0.80 0.015 0.010 1.25 0.65

ASTM A29 / General machine constructionAISI 8620 (1.6523) 20 NiCrMo 22 20NiCrMo2-2 805M20 AISI 8620 G86200 20NCD2 SNC M21 min. 0.18 0.20 0.70 0.010 0.40 0.40 0.15

max. 0.23 0.35 0.95 0.025 0.025 0.65 0.75 0.25

ASTM A29 / General machine constructionAISI 8630 (6545) 30 NiCrMo 22 30NiCrMo2 KD AISI 8630 G86300 30NCD2 min. 0.28 0.15 0.70 0.40 0.40 0.15

max. 0.33 0.35 0.90 0.035 0.040 0.60 0.70 0.25

ASTM A29 / General machine constructionAISI 8630 M1 Modified Analysis AISI 8630 min. 0.28 0.15 0.75 0.85 0.80 0.35 0.010

max. 0.33 0.35 0.90 0.015 0.010 1.00 0.90 0.45 0.006 0.020 0.006 Cu max. 0.20 Ti max. 0.007

DINmaterialno.

Shortspecificationaccordingto DIN

ENspecification

GB

Type UNS

FUSA J

C

Chemical analysis in weight per cent Upper and lower range

Si Mn P S Cr Ni Mo V Al Nb OtherStoossspecification

The chemical analysis conform to STOOSS purchasing specifications. The comparative national designations may differfrom the STOOSS analysis and are purely for information purposes.

Details on material application are for description purposes only. They are provided to the best of our knowledge,but without any guarantee. Special agreements in writing are always required.

SEW 555 / Turbine and generator construction / Hub and cover disks